drm/msm/dpu: Fix memory leak in msm_mdss_parse_data_bus_icc_path

[ Upstream commit 45dac13 ]

of_icc_get() alloc resources for path1, we should release it when not
need anymore. Early return when IS_ERR_OR_NULL(path0) may leak path1.
Defer getting path1 to fix this.

Fixes: b9364ee ("drm/msm/dpu: Move min BW request and full BW disable back to mdss")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/514264/
Link: https://lore.kernel.org/r/20221207065922.2086368-1-linmq006@gmail.com
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/gpu/drm/msm/msm_mdss.c

@@ -46,15 +46,17 @@ struct msm_mdss {
 static int msm_mdss_parse_data_bus_icc_path(struct device *dev,
 					    struct msm_mdss *msm_mdss)
 {
-	struct icc_path *path0 = of_icc_get(dev, "mdp0-mem");
-	struct icc_path *path1 = of_icc_get(dev, "mdp1-mem");
+	struct icc_path *path0;
+	struct icc_path *path1;
 
+	path0 = of_icc_get(dev, "mdp0-mem");
 	if (IS_ERR_OR_NULL(path0))
 		return PTR_ERR_OR_ZERO(path0);
 
 	msm_mdss->path[0] = path0;
 	msm_mdss->num_paths = 1;
 
+	path1 = of_icc_get(dev, "mdp1-mem");
 	if (!IS_ERR_OR_NULL(path1)) {
 		msm_mdss->path[1] = path1;
 		msm_mdss->num_paths++;